The cheaper of the two, Keon, costs €91 plus taxes, while the higher-specced Peak costs €149 plus taxes. Both can be ordered from shop.geeksphone.com and shipped globally, according to an announcement by Madrid-based Geeksphone.

At the time of writing, however, it appears the shop webpage is down for maintenance. ZDNet has asked Geeksphone when it expects to be online again and will update the story when it gets a response.

Mozilla has been using Keon and Peak, which were developed by Geekphone and Spanish operator Telefonica, as its Firefox OS developer devices, and recently offered developers who attend its engagement programs the devices for free.

The Keon runs on a Qualcomm Snapdragon S1 1GHz processor, with a 3.5-inch HVGA touchscreen display, three-megapixel camera, and 4GB of internal storage. It also has the smartphone staples of microSD support, wi-fi, and GPS. It does not, however, have a forward-facing camera.

The Peak includes a dual-core 1.2GHz Snapdragon S4 processor, 4.3-inch qHD display, eight-megapixel camera on the rear, and 4GB of internal storage. It also has a forward-facing two-megapixel camera and a higher capacity battery.

Mozilla chief Gary Kovacs said earlier this week that it will be launching Firefox OS devices in Venezuela, Poland, Brazil, Portugal and Spain by June and 11 more nations by the end of the year, with a US launch planned for 2014.

Mozilla is also working with Alcatel, LG, ZTE and Huawei to build Firefox OS devices, which will all run on Qualcomm Snapdragon processors.

Thank You

By registering you become a member of the CBS Interactive family of sites and you have read and agree to the Terms of Use, Privacy Policy and Video Services Policy. You agree to receive updates, alerts and promotions from CBS and that CBS may share information about you with our marketing partners so that they may contact you by email or otherwise about their products or services.
You will also receive a complimentary subscription to the ZDNet's Tech Update Today and ZDNet Announcement newsletters. You may unsubscribe from these newsletters at any time.